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L-Cystine Powder

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Price From: FROM $14.96

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L-Cystine Powder


  • Promotes cognitive function
  • May improve memory and focus
  • Heart healthy
  • Taste

  • Mixability

Cystine is the oxidized form of the amino acid cysteine. It may contribute to heart health and improve cognitive function and mood.


Serving Size & Timing

As a dietary supplement, take 500 mg (about 1/3 tsp) one to three times a day, or as directed by a physician.

As with all supplements meant to promote general well-being, it is important to note that a supplement such as this is by no means a substitute for legitimate medical advice. It is always best to talk to a doctor if you are experiencing problems with your health before taking any supplements.

Nutritional Information

Supplement Facts

Serving size: 500 milligrams
Serving per container: *
Amount Per Serving % Daily Value**
L-Cystine 500 mg *
* Daily Value not established.
** Based on 2,000 calorie diet


Sugar, soy, dairy, yeast, gluten, corn and additives.

As a dietary supplement, take 500 mg (about 1/3 tsp) one to three times a day, or as directed by physician.

US Standard Measuring Spoons
Spoon Size (level) milligrams
1/8 teaspoon 191
1/4 teaspoon 382
1/2 teaspoon 764
1 teaspoon 1528



This supplement contains no fillers, additives, or preservatives.


Talk to your doctor before taking this product if you are pregnant or nursing. Do not take this supplement if you take ACE inhibitors, prednisone, cyclophosphamide, or medications used to treat chest pain.

California residents: Click here for Proposition 65 warning.

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Product Questions

Is this cysteine vegan? not from hair?